Photograph by Max Aguilera-Hellweg, National Geographic

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The PR2 robot was developed to be easily customized for research. Here it's being used to deliver mail.

Photograph by Max Aguilera-Hellweg, National Geographic

Robot Revolution? Scientists Teach Robots to Learn

For robots to really help humans, they'll need to learn more like we do.

By Brian Handwerk, for National Geographic

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Image of the 125 Anniversary logo Part of our weekly "In Focus" series—stepping back, looking closer.